If 18:x = x:8, find x
thank you :)
9 answers
x = 24
could i have an explanation please?
nope, it's 12
how?
18:x = x:8
18 / x = x / 8
cross multiply
18 * 8 = x * x
144 = x^2
sqrt(144) = x
so x = 12
18 / x = x / 8
cross multiply
18 * 8 = x * x
144 = x^2
sqrt(144) = x
so x = 12
thank youu!! i understand :)
cool beans, glad it helped
18 : x = x : 8
Cross multiply.
18 • 8 = x • x
144 = x²
x² = 144
x = ± √144
x = ± 12
The solutions are:
x = - 12 and x = 12
Cross multiply.
18 • 8 = x • x
144 = x²
x² = 144
x = ± √144
x = ± 12
The solutions are:
x = - 12 and x = 12
oh wow bosnian is right, there are two solutions
1 answer